Usage of matrices on R
Provide in the plain text R commands that finds/solves the following:
Create a matrix named m1 with three rows and five columns and all the numeric (integer) values from 6 to 20!
Multiply all elements in m1 by 0.5! Overwrite the matrix m1 with the result!
- Create another matrix m2 with one row and five columns and all the numeric (integer) values from 1 to 5!
- Calculate the sum of all elements in m2!
- Combine m1 and m2 with rbing(). Save the result as m3 and check the dimension of the new matrix!
- Index the 5th column of m3!
- Index the 2nd and 4th lines of m3!
- Calculate the sums for all columns in m3!
- Calculate the standard deviation for the 3rd column in m3!
- From m3, index the element in the 2nd column and 2nd line and all eight adjacent elements! Save the result as m4 and examine its object class!
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